Re: Topband: New user, some advice needed.

2016-12-21 Thread Clive GM3POI
@contesting.com; Petronel Postolache Subject: Re: Topband: New user, some advice needed. I have noticed several times that people talk about being able to put up a full .250 wavelength vertical and I have wondered why almost never do they think about making it .270 wavelength instead of .250 wavelength

Re: Topband: New user, some advice needed.

2016-12-21 Thread Clive GM3POI
@contesting.com; Petronel Postolache Subject: Re: Topband: New user, some advice needed. I have noticed several times that people talk about being able to put up a full .250 wavelength vertical and I have wondered why almost never do they think about making it .270 wavelength instead of .250 wavelength

Re: Topband: New user, some advice needed.

2016-12-21 Thread MICHAEL ST ANGELO
Pat, My Inverted L is longer than a quarter wavelength. I also use it on the HF bands 80-20 and it is easier to match since it is not a multiple of a half wavelength Mike N2MS > On December 21, 2016 at 3:43 PM Patrick Armstrong wrote: > > >I have noticed several

Re: Topband: New user, some advice needed.

2016-12-21 Thread Petronel YO8SEP
What do you mean by linear loading? How long are your radials? 73, Petronel YO8SEP On 21 Dec 2016 22:43, "Patrick Armstrong" wrote: >I have noticed several times that people talk about being able to put > up a full .250 wavelength vertical and I have wondered why almost

Re: Topband: New user, some advice needed.

2016-12-21 Thread Patrick Armstrong
I have noticed several times that people talk about being able to put up a full .250 wavelength vertical and I have wondered why almost never do they think about making it .270 wavelength instead of .250 wavelength. The little extra length gives a feed point impedance of 52 ohms with some

Re: Topband: New user, some advice needed.

2016-12-20 Thread W0MU Mike Fatchett
https://www.dxengineering.com/search/product-line/dx-engineering-160-meter-thunderbolt-vertical-antennas?autoview=SKU=160%20vertical=BestKeywordMatch=Ascending On 12/20/2016 10:24 AM, Petronel Postolache wrote: I can't find the Vertical from DX Engineering. If you can send me a link it will be

Re: Topband: New user, some advice needed.

2016-12-20 Thread Petronel Postolache
I can't find the Vertical from DX Engineering. If you can send me a link it will be great. One solution might be top hat vertical, similar with http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the matching unit L1, C1. I would love a Waller Flag too. Imposible to buy one from here

Re: Topband: New user, some advice needed.

2016-12-19 Thread W0MU Mike Fatchett
Check out DX Engineering. They sell a vertical that uses 3 top hat wires. Sloping back down is ok. For 80/160 you need to stop the 80m energy with a coil/trap My 80 uses a very fast taper and the top is only 3/8 inch or less so It cannot support a coil or t wires. I probably should have

Re: Topband: New user, some advice needed.

2016-12-19 Thread Petronel Postolache
I can try to put a 21-22m (68-70 foot) telescopic aluminium pole, made from pipes 2" to 1" diameter. It will be a bit too long for 1/4 on 80m. I can put a T top hat or run an InvL, but probably need to slope it from 70 foot to about 40 foot. What will be better ? and will I be able to match/use

Re: Topband: New user, some advice needed.

2016-12-19 Thread W0MU Mike Fatchett
160 and 80 will be difficult. Can you get another vertical up about 60 feet? You can top load that with a trap for 80 and have "t" wires at the top that also act as guy wires.You can also bottom load for 160 and maybe that will be good enough for you. Radials whatever you can do will

Topband: New user, some advice needed.

2016-12-19 Thread Petronel Postolache
Hi, I got my first ham license 2 years ago, and because I couldn't install an antenna at home, I've worked mostly portable (SOTA, WWFF activations). In February 2016 participated on CQ 160 SSB from YR8E and got the "contesting virus". So, I've started to built a QTH at my parents home, about 1